A thick plate of cells derived from the neural ectoderm in the head region of the embryo that develops into the olfactory region of the nasal cavity.
Comment:
Olfactory placodes are the only ectodermal placodes to produce glia, a cell type typically derived from neural crest // Note that NBK53171 classifies this as non-neurogenic; [homology-note] "We conclude this section by listing some of the many synapomorphies of craniates, including (...) (2) neurogenic placodes (...).[well established][VHOG]" xsd:string {date_retrieved="2012-09-17", external_class="VHOG:0000186", ontology="VHOG", source="ISBN:978-0030223693 Liem KF, Bemis WE, Walker WF, Grande L, Functional Anatomy of the Vertebrates: An Evolutionary Perspective (2001) p.43", source="http://bgee.unil.ch/"}